Well in my neck of the woods....we have a inspection....But...I have the cable type and never had problems..they ask what it was for..I told them it was to open up my headers when I was at the track and as long as it met sound standards..when they were closed....They couldnt fail me!! I have been running them for 10 years now..and will probably upgrade to electric when the 428CJ goes in...

Russ